Rounds Fix Fall Thru Map

A small BepInEx plugin for ROUNDS that ensures a client's map pool matches the host's when joining a friend's game. This prevents map-related issues (falling through, missing objects) caused by locally disabled maps.

Status: development

Features

• Applies the host-approved map list on join by patching UnboundLib's map-handshake response.
• Updates the map menu visuals to reflect the host's allowed maps for the running session.
• Avoids forcing permanent user config changes; behavior follows UnboundLib semantics.

Dependencies

• BepInEx (plugin framework)
• UnboundLib (REQUIRED) — declared as a hard dependency in the plugin

Installation

1. Install BepInEx into your ROUNDS install directory.
2. Install UnboundLib into ROUNDS/BepInEx/plugins.
3. Build this project and copy the produced DLL to ROUNDS/BepInEx/plugins (or the equivalent mod manager profile folder).
4. Launch ROUNDS and join a friend's lobby.

Building

Recommended (release) — build against a real ROUNDS install so the mod compiles against the correct API:

# point to your ROUNDS install
dotnet build RoundsFixFallThruMap.slnx -p:RoundsFolder="/path/to/ROUNDS"

Developer convenience — local-only validation without the game present:

# uses included stubs; not recommended for releases
dotnet build RoundsFixFallThruMap.slnx -p:AllowLocalStubs=true

Notes:

• The project intentionally fails the build when a real ROUNDS install is not found (unless AllowLocalStubs is set). This prevents accidentally shipping a DLL built against the stub API.
• The csproj attempts to auto-detect common Steam and r2modman paths; override RoundsFolder or UnboundLibPath if necessary.

Development

• The plugin declares a hard dependency on UnboundLib so BepInEx will load it only when UnboundLib is available.
• Reflection is used defensively to read private UnboundLib fields where necessary to remain compatible across versions.

License

See LICENSE in the repository.